Andean Condors are a New World vulture species. They have the largest wingspan of any land bird, of around 3.2m, and weigh around 11kg. They are relatively social birds, roosting in communal areas, and have a dominance hierarchy. The most dominant birds get the best nesting spots. They are monogamous and pairs will mate for life. They are classified as Near Threatened due to their recent severe population decline. This was caused by habitat loss, persecution and lead poisoning.